我的笔记本电脑 Packard Bell ENTG71BM 在安装 ubuntu 14.04 时无法关机。使用 Windows 一切正常。我使用了很多不同的建议（编辑 Grub、更新 BIOS），但它仍然无法正常工作。我几乎可以肯定，问题出在 ACPI 上。我有日志：
[ 0.000000] BIOS-e820: [mem 0x000000007867a000-0x0000000078779fff] ACPI NVS
[ 0.000000] BIOS-e820: [mem 0x000000007877a000-0x00000000787b9fff] ACPI data
[ 0.000000] BIOS-e820: [mem 0x00000000794d0000-0x0000000079dcffff] ACPI NVS
[ 0.000000] ACPI: Early table checksum verification disabled
[ 0.000000] ACPI: RSDP 0x00000000000FE020 000024 (v02 ACRSYS)
[ 0.000000] ACPI: XSDT 0x00000000787B9120 00008C (v01 ACRSYS ACRPRDCT 00000003 01000013)
[ 0.000000] ACPI: FACP 0x00000000787B6000 0000F4 (v04 ACRSYS ACRPRDCT 00000003 1025 00040000)
[ 0.000000] ACPI: DSDT 0x00000000787A9000 0077FA (v02 ACRSYS ACRPRDCT 00000003 1025 00040000)
[ 0.000000] ACPI: FACS 0x0000000078742000 000040
[ 0.000000] ACPI: UEFI 0x00000000787B8000 000236 (v01 ACRSYS ACRPRDCT 00000001 1025 00040000)
[ 0.000000] ACPI: HPET 0x00000000787B5000 000038 (v01 ACRSYS ACRPRDCT 00000003 1025 00040000)
[ 0.000000] ACPI: LPIT 0x00000000787B4000 000104 (v01 ACRSYS ACRPRDCT 00000003 1025 00040000)
[ 0.000000] ACPI: APIC 0x00000000787B3000 000084 (v03 ACRSYS ACRPRDCT 00000003 1025 00040000)
[ 0.000000] ACPI: MCFG 0x00000000787B2000 00003C (v01 ACRSYS ACRPRDCT 00000003 1025 00040000)
[ 0.000000] ACPI: SSDT 0x00000000787B1000 000763 (v01 ACRSYS ACRPRDCT 00003000 1025 00040000)
[ 0.000000] ACPI: SSDT 0x00000000787A7000 000290 (v01 ACRSYS ACRPRDCT 00003000 1025 00040000)
[ 0.000000] ACPI: SSDT 0x00000000787A6000 00017A (v01 ACRSYS ACRPRDCT 00003000 1025 00040000)
[ 0.000000] ACPI: UEFI 0x00000000787A5000 000042 (v01 ACRSYS ACRPRDCT 00000000 1025 00040000)
[ 0.000000] ACPI: SSDT 0x00000000787A2000 002F10 (v01 ACRSYS ACRPRDCT 00001000 1025 00040000)
[ 0.000000] ACPI: SSDT 0x00000000787A1000 00013D (v01 ACRSYS ACRPRDCT 00001000 1025 00040000)
[ 0.000000] ACPI: FPDT 0x00000000787A0000 000044 (v01 ACRSYS ACRPRDCT 00000002 1025 00040000)
[ 0.000000] ACPI: Local APIC address 0xfee00000
[ 0.000000] ACPI: PM-Timer IO Port: 0x408
[ 0.000000] ACPI: Local APIC address 0xfee00000
[ 0.000000] ACPI: LAPIC (acpi_id[0x01] lapic_id[0x00] enabled)
[ 0.000000] ACPI: LAPIC (acpi_id[0x02] lapic_id[0x02] enabled)
[ 0.000000] ACPI: LAPIC (acpi_id[0x02] lapic_id[0x04] disabled)
[ 0.000000] ACPI: LAPIC (acpi_id[0x02] lapic_id[0x06] disabled)
[ 0.000000] ACPI: LAPIC_NMI (acpi_id[0x01] high level lint[0x1])
[ 0.000000] ACPI: LAPIC_NMI (acpi_id[0x02] high level lint[0x1])
[ 0.000000] ACPI: LAPIC_NMI (acpi_id[0x03] high level lint[0x1])
[ 0.000000] ACPI: LAPIC_NMI (acpi_id[0x04] high level lint[0x1])
[ 0.000000] ACPI: IOAPIC (id[0x02] address[0xfec00000] gsi_base[0])
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[ 0.000000] ACPI: IRQ0 used by override.
[ 0.000000] ACPI: IRQ9 used by override.
[ 0.000000] Using ACPI (MADT) for SMP configuration information
[ 0.000000] ACPI: HPET id: 0x8086a201 base: 0xfed00000
[ 0.000053] ACPI: Core revision 20141107
[ 0.014130] ACPI: All ACPI Tables successfully acquired
[ 0.107621] PM: Registering ACPI NVS region [mem 0x7867a000-0x78779fff] (1048576 bytes)
[ 0.107651] PM: Registering ACPI NVS region [mem 0x794d0000-0x79dcffff] (9437184 bytes)
[ 0.116926] ACPI: bus type PCI registered
[ 0.116930] acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5
[ 0.121631] ACPI: Added _OSI(Module Device)
[ 0.121637] ACPI: Added _OSI(Processor Device)
[ 0.121639] ACPI: Added _OSI(3.0 _SCP Extensions)
[ 0.121642] ACPI: Added _OSI(Processor Aggregator Device)
[ 0.131423] ACPI: Dynamic OEM Table Load:
[ 0.131438] ACPI: SSDT 0xFFFF88017A5F0800 000440 (v01 PmRef Cpu0Ist 00003000 INTL 20130117)
[ 0.132260] ACPI: Dynamic OEM Table Load:
[ 0.132271] ACPI: SSDT 0xFFFF88017A5F1000 000433 (v01 PmRef Cpu0Cst 00003001 INTL 20130117)
[ 0.133488] ACPI: Dynamic OEM Table Load:
[ 0.133499] ACPI: SSDT 0xFFFF88017A5A5600 00015F (v01 PmRef ApIst 00003000 INTL 20130117)
[ 0.134289] ACPI: Dynamic OEM Table Load:
[ 0.134299] ACPI: SSDT 0xFFFF88017A5AD900 00008D (v01 PmRef ApCst 00003000 INTL 20130117)
[ 0.136345] ACPI: Interpreter enabled
[ 0.136359] ACPI Exception: AE_NOT_FOUND, While evaluating Sleep State [\_S1_] (20141107/hwxface-580)
[ 0.136368] ACPI Exception: AE_NOT_FOUND, While evaluating Sleep State [\_S2_] (20141107/hwxface-580)
[ 0.136395] ACPI: (supports S0 S3 S4 S5)
[ 0.136399] ACPI: Using IOAPIC for interrupt routing
[ 0.136459] PCI: Ignoring host bridge windows from ACPI; if necessary, use "pci=use_crs" and report a bug
[ 0.546523] ACPI: Power Resource [USBC] (on)
[ 0.551193] ACPI: Power Resource [PLPE] (on)
[ 0.551475] ACPI: Power Resource [PLPE] (on)
[ 0.552379] ACPI: Power Resource [FN00] (off)
[ 0.553399] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff])
[ 0.553410] acpi PNP0A08:00: _OSC: OS supports [ExtendedConfig ASPM ClockPM Segments MSI]
[ 0.554212] acpi PNP0A08:00: _OSC: platform does not support [PME]
[ 0.554561] acpi PNP0A08:00: _OSC: OS now controls [PCIeHotplug AER PCIeCapability]
[ 0.555004] acpi PNP0A08:00: host bridge window [io 0x0000-0x006f] (ignored)
[ 0.555009] acpi PNP0A08:00: host bridge window [io 0x0078-0x0cf7] (ignored)
[ 0.555013] acpi PNP0A08:00: host bridge window [io 0x0d00-0xffff] (ignored)
[ 0.555017] acpi PNP0A08:00: host bridge window [mem 0x000a0000-0x000bffff] (ignored)
[ 0.555021] acpi PNP0A08:00: host bridge window [mem 0x000c0000-0x000dffff] (ignored)
[ 0.555024] acpi PNP0A08:00: host bridge window [mem 0x000e0000-0x000fffff] (ignored)
[ 0.555028] acpi PNP0A08:00: host bridge window [mem 0x80000000-0x909ffffe] (ignored)
[ 0.555037] acpi PNP0A08:00: [Firmware Info]: MMCONFIG for domain 0000 [bus 00-3f] only partially covers this bridge
[ 0.556158] pci 0000:00:14.0: System wakeup disabled by ACPI
[ 0.556912] pci 0000:00:1c.0: System wakeup disabled by ACPI
[ 0.557120] pci 0000:00:1c.2: System wakeup disabled by ACPI
[ 0.557333] pci 0000:00:1c.3: System wakeup disabled by ACPI
[ 0.557670] pci 0000:00:1d.0: System wakeup disabled by ACPI
[ 0.558772] pci 0000:02:00.0: System wakeup disabled by ACPI
[ 0.565180] pci 0000:03:00.0: System wakeup disabled by ACPI
[ 0.777263] ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 5 6 10 11 12 14 15) *7
[ 0.777382] ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 5 6 10 *11 12 14 15)
[ 0.777498] ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 5 6 10 *11 12 14 15)
[ 0.777623] ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 6 *10 11 12 14 15)
[ 0.777738] ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 6 10 *11 12 14 15)
[ 0.777853] ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 10 11 12 14 15) *7
[ 0.777970] ACPI: PCI Interrupt Link [LNKG] (IRQs 3 4 5 6 *10 11 12 14 15)
[ 0.778086] ACPI: PCI Interrupt Link [LNKH] (IRQs 3 4 5 6 10 11 12 14 15) *7
[ 0.778631] ACPI: Enabled 4 GPEs in block 00 to 3F
[ 0.778822] ACPI : EC: GPE = 0x18, I/O: command/status = 0x66, data = 0x62
[ 0.779650] ACPI: bus type USB registered
[ 0.780028] PCI: Using ACPI for IRQ routing
[ 0.792560] pnp: PnP ACPI init
[ 0.792656] pnp 00:00: Plug and Play ACPI device, IDs PNP0b00 (active)
[ 0.792829] system 00:01: Plug and Play ACPI device, IDs PNP0c02 (active)
[ 0.793023] pnp 00:02: Plug and Play ACPI device, IDs PNP0303 (active)
[ 0.793141] pnp 00:03: Plug and Play ACPI device, IDs ETD050a SYN1b00 SYN0002 PNP0f13 (active)
[ 0.996895] system 00:04: Plug and Play ACPI device, IDs PNP0c02 (active)
[ 0.997242] pnp: PnP ACPI: found 5 devices
[ 1.005505] Switched to clocksource acpi_pm
[ 3.314196] ACPI: AC Adapter [ADP1] (on-line)
[ 3.314429] ACPI: Power Button [PWRB]
[ 3.314512] ACPI: Sleep Button [SLPB]
[ 3.314627] ACPI: Lid Switch [LID0]
[ 3.314709] ACPI: Power Button [PWRF]
[ 3.317776] ACPI: Thermal Zone [TZ01] (49 C)
[ 3.318931] ACPI: Battery Slot [BAT0] (battery present)
[ 3.379548] ACPI PCC probe failed.
[ 3.657500] ACPI: Video Device [GFX0] (multi-head: yes rom: no post: no)
[ 13.077676] acer_wmi: Acer Laptop ACPI-WMI Extras
[ 13.100607] acer_wmi: Brightness must be controlled by acpi video driver
有人能说一切都正常吗？我真的遇到了 ACPI 问题吗？